In the CGSM, shear modulus and damping ratio of the soil are functions of depth and shear strain, wave equation for the transmission of shear wave is obtained.
The only differences are that the original length, area, and change in length represent different parts of the object, and that we use a different modulus.
This means taking one number, the base, to the power of another number, the exponent, and taking the remainder when dividing by a third number, the modulus.